62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
#include <assert.h>
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#include <string.h>
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#include <wayland-server.h>
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#include <wlr/interfaces/wlr_buffer.h>
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#include <wlr/util/log.h>
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#include "types/wlr_buffer.h"
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/* struct wlr_buffer_resource_interface */
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static struct wl_array buffer_resource_interfaces = {0};
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void wlr_buffer_register_resource_interface(
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const struct wlr_buffer_resource_interface *iface) {
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assert(iface);
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assert(iface->is_instance);
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assert(iface->from_resource);
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const struct wlr_buffer_resource_interface **iface_ptr;
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wl_array_for_each(iface_ptr, &buffer_resource_interfaces) {
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if (*iface_ptr == iface) {
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wlr_log(WLR_DEBUG, "wlr_resource_buffer_interface %s has already"
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"been registered", iface->name);
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return;
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}
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}
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iface_ptr = wl_array_add(&buffer_resource_interfaces, sizeof(iface));
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*iface_ptr = iface;
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}
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static const struct wlr_buffer_resource_interface *get_buffer_resource_iface(
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struct wl_resource *resource) {
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struct wlr_buffer_resource_interface **iface_ptr;
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wl_array_for_each(iface_ptr, &buffer_resource_interfaces) {
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if ((*iface_ptr)->is_instance(resource)) {
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return *iface_ptr;
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}
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}
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return NULL;
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}
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struct wlr_buffer *wlr_buffer_try_from_resource(struct wl_resource *resource) {
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if (strcmp(wl_resource_get_class(resource), wl_buffer_interface.name) != 0) {
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return NULL;
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}
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const struct wlr_buffer_resource_interface *iface =
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get_buffer_resource_iface(resource);
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if (!iface) {
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wlr_log(WLR_ERROR, "Unknown buffer type");
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return NULL;
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}
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struct wlr_buffer *buffer = iface->from_resource(resource);
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if (!buffer) {
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wlr_log(WLR_ERROR, "Failed to create %s buffer", iface->name);
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return NULL;
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}
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return wlr_buffer_lock(buffer);
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}
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